Tool-holder



(No Model.) Y I* f E. W.V COOKE.

l TOOL HOLDER'.l

v1\I0. 166,,27. y. a -Patentea'Jan-..5,189zg WIT/VESSES' M l/VVE/VTO Iol ' UNITED STATES PATENT OFFICE.

EBN-EST WILLIAM'COOKE, OF WESTERN SPRINGS, ILLINOIS. .v

TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 466,327, dated January 5, 1892. Application filed Febrnary 9, 1891. Serial No. 380,855. (No model.)

.To all whom it may concern:

Beit known that I', ERNEST WILLIAM COOKE,

a citizen of the United States, and a resident of Western Springs,in the count y of Cook and State of Illinois, have inventeda certain new and useful Improvement in Tool-Holders, of

which the following is a specification.

'and secure manner the cutting-tool, thereby preventingits displacement while in use.

In the accompanying drawings, Figure lis a perspective View of my tool-holder, showing in dotted lines the cutting-tool in position. Fig. 2 is a sectional view on line a: of Fig. l, and Fig. 3 is a sectional View on line y y of Fig. 2.

Inthe drawings forming part of this specitication, the numeral 1- indicates the lower section of the tool-holder, 'to which is adjustably secured the upper section 2 by any suitable means, in this instance by screws 3 4c, passing through enlarged openings or slots 5 G in the uppersection 2 and entering threaded holes l2 and 13 in the lower section l, as plainly shown in Fig. 2. The upper section 2 of the tool-holder is cut away or milled at its forward end on the under side, as at 7, said cut-away portion being of, substantially the shape ot' the upper portion of the shank of the tool designed to be held in the holder, in this instance being inclined upwardly. The

'lower section l is also cut out or milled, as

at 8, said lower cut-away portion being of a configuration similar to the under side of the shank of the cutting-tool designed to be used. In this instance the cut-away portion is concaved or substantially V-shaped in cross-section, and at its upper end is inclined upwardly, as'shown plainly in the drawings. I find that such a construction of tool as this presents better means for securing the tool in position against lateral displacement. The rear end of the lower section 1 is provided with a threaded hole 9,'in which the screw l0 operates. ll indicates a washer interposed between the head of the screw and the end of the tool-holder. By means of this screw' .10 I am enabled to adjust longitudinally the upper section 2 of the tool-holder.

- erate upon.

In operation the cutting-tool is placed with its convexor swelled portion in the correspondingly-.shaped recess in the lower section of the tool-holder, and the upper section is then placed in position with its inclined :recessed-portion straddling the inclined upper side of the shank of the cutting-tool. The screws 3 and a are then passed through the slots in the upper section into the lthreaded holes in the lower section and turned so as to tightly hold the tool in position. The upper section, as already stated, is adjusted longitudinally by the screw and Washer in the rear portion of the lower section.

Owing to the shapes of the portions of the sect-ions which contact with the tool, the latter is immovably locked in position so as to successfully resist the severe strain of the hardest metal that it may be necessary to op- In fact, the resistance of the material operated upon has a tendency to make the fastening more secure.

Having thus fully described my invention, what I claim herein as new, and desire to secure by Letters Patent of thel United States l. A tool-holder having an upper and a lower section recessed, the recess of the lower section being concaved at each end, adapted to receive a non-curved tool, and the upper section'provided with a tap for the top of the shank to rest against, and means-whereby said sections are adj ustably secured together, as set forth.

2. A tool-holder having an upperand a lower section, and means for adj ustably securingsaid sections tightlyin contact through out their lengths, the upper portion being recessed and provided with a straight tapering shoulder and the lower portion having a concaved recess, said recesses being adapted to receive the tool-shank, as set forth.

3. Al tool-holder having upper and lower sections with contacting t'aces through their lengths and both recessed at their forward ends, the recess of the upper section being straight and the recess of the lower section being concaved and said lower-section recess projecting at one end beyond the upper-section recess, and means for securing said sections adj ustably together,.as set forth.

4. A tool-holder the lower section of which IOO ting-shank, means for adjustably clamping the cutter, and means for longitudinally ud- .justing one section of the holder upon the other, as set forth.

In testimony whereof I affix my signature in the presence of` two Witnesses.

ERNEST WILLIAM COOKE.

Vi tnesses W. E. AUGHINBAUGH, R. J. BEALL, Jr. 

